The Son of The Promise (Isaac)

Genesis 17:15: "And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be."

Genesis 17:16: "And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall be of her."

Genesis 17:17: "Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is an hundred years old? and shall Sarah, that is ninety years old, bear?"

Genesis 17:18: "And Abraham said unto God, O that Ishmael might live before thee!"

Genesis 17:19: "And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him."

Genesis 21:1: "And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken."

Genesis 21:2: "For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him."

Genesis 21:3: "And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac."